Smart quantum dot LEDs with simulated solar spectrum for intelligent lighting. (7th October 2020)

• Record Type: Journal Article
• Authors: Zhao, Yue; Xue, Dingke; Wang, Jiatong; Lu, Min; Shen, Xinyu; Gao, Xupeng; Yu, William W; Bai, Xue
• Is Part Of: Nanotechnology. Volume 31:Number 50(2020)
• Publication Date: 2020-10-07
• Subjects: quantum dot -- smart bulb -- solar spectrum -- GaN chip; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/abab2f
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: LED light bulbs that simulate solar spectrum were fabricated using CdSe core–shell quantum dots in combination with GaN blue-light chips. They exhibited excellent optical properties such as white CIE coordinates of (0.33, 0.33), high color rendering index (CRI) of 98 and correlated color temperature (CCT) of 5352 K. Moreover, a circuit system was used to control the LEDs so that the lighting spectrum changes with the time in a day to simulate the actual solar spectrum. The results show that the sun-like spectrum smart bulbs not only have good optical properties and high electrical stability, but also can automatically adjust their spectrum according to the time, making the lighting natural. This work makes sun-like lighting conditions for some special environments to promote the application of smart bulbs in smart lighting.